학술논문

Design of Non-Quadrature Branch Line Coupler with Unequal Power Division using Asymmetric T-Structure
Document Type
Conference
Source
2023 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON) Microwaves, Antennas, and Propagation Conference (MAPCON), 2023 IEEE. :1-4 Dec, 2023
Subject
Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Engineering Profession
Fields, Waves and Electromagnetics
Signal Processing and Analysis
Microwave measurement
Microwave antennas
Antenna measurements
Power transmission lines
Couplers
Transmission line measurements
Microwave theory and techniques
Asymmetric-T
branch-line coupler
unequal amplitude imbalance
non-quadrature phase imbalance
Language
Abstract
In this work, it is shown that non-quadrature branch-line couplers can be designed using asymmetric two-port networks of T-Structure instead of transmission lines as in the conventional branch-line coupler. The design equations of the proposed coupler have been obtained using the Y-matrix method. The primary advantage is that it provides design flexibility for equal and unequal power division with quadrature and non-quadrature phase differences across ports. A practical design of the proposed coupler has been implemented on FR4 Substrate.